5)
here margin of error E = | 0.018 | |
for99% CI crtiical Z = | 2.575 | from excel:normsinv((1+0.99)/2) |
estimated prop.=p= | 0.500 | |
sample size n= p*(1-p)*(z/E)2= | 5117 | (rounding up) |
6)
il Boost 7:49 PM Exit Question 5 5 pts Use the given data to find the...
il Boost 7:49 PM Exit Question 5 5 pts Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.018; confidence level: 99%;p and unknown 4966 04114 7116 O 5117 ..l Boost 7:49 PM Exit Express the null hypothesis and the alternative hypothesis in symbolic form for a test to support this claim. Use the correct symbol q,p, a) for the indicated parameter. An entomologist writes an article in a scientific...
Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol for the indicated parameter. An entomologist writes an article in a scientific journal which claims that fewer than 7 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Use the parameter p, the true proportion of fireflies unable to produce light. A) H0: p > 0.0007 H1: p ? 0.0007 B) H0: p = 0.0007 H1: p > 0.0007...
Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. α-0.05for a left-tailed test. SELECT ALL APPLICABLE CHOICES B) 1.96 士1.96 ±1.645 1.645 E) None of these 19 Assume that a simple random sample has been selected from a normally distributed population and test the conclusion that addresses the original claim and select three correct choices. A test of sobriety SELECT ALL...
il Boost 7:50 PM Exit Find the value of the test statistic z using z = -2 Vn P9 The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n = 696 drowning deaths of children with 30% of them attributable to beaches. O 3.05 0 -2.88 0 -3.05 O 2.88 Il Boost 7:50 PM Exit Use the given information to find the P-value. Also, use a...
Question 2 ases 5 pts Je Use the confidence level and sample data to find a confidence interval for estimating the population u. Find the margin of error E and round your answer to the nearest tenth. n 49, = 87,5 - 12: 90% confidence Question 4 5 pts Use the confidence level and sample data to find a confidence interval for estimating the population p. Round your answer to the nearest tenth, if necessary. Test scores: n - 100...
Use the confidence level and sample data to find a confidence interval for estimating the population. Round your answer to the same number of decimal places as the sample mean 19) A group of 5 randomly selected students have a mean score of 295 with a standard deviation of 19 5.2 on a placement test. What is the 90% confidence interval for the mean score of all students taking the test? A) 27.8 < <312 ) 27.9<<311 C)282 << 308...